/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:27:18,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:27:18,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:27:19,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:27:19,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:27:19,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:27:19,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:27:19,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:27:19,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:27:19,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:27:19,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:27:19,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:27:19,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:27:19,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:27:19,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:27:19,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:27:19,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:27:19,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:27:19,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:27:19,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:27:19,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:27:19,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:27:19,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:27:19,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:27:19,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:27:19,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:27:19,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:27:19,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:27:19,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:27:19,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:27:19,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:27:19,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:27:19,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:27:19,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:27:19,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:27:19,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:27:19,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:27:19,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:27:19,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:27:19,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:27:19,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:27:19,043 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:27:19,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:27:19,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:27:19,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:27:19,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:27:19,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:27:19,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:27:19,071 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:27:19,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:27:19,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:27:19,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:27:19,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:27:19,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:27:19,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:27:19,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:27:19,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:27:19,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:27:19,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:27:19,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:27:19,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:27:19,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:27:19,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:27:19,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:19,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:27:19,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:27:19,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:27:19,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:27:19,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:27:19,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:27:19,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:27:19,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:27:19,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:27:19,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:27:19,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:27:19,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:27:19,632 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:27:19,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 04:27:19,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e86f44c/479c605e7ade40939ad8102d5bb65ff9/FLAGcdcbadce0 [2020-09-25 04:27:20,393 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:27:20,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label19.c [2020-09-25 04:27:20,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e86f44c/479c605e7ade40939ad8102d5bb65ff9/FLAGcdcbadce0 [2020-09-25 04:27:20,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e86f44c/479c605e7ade40939ad8102d5bb65ff9 [2020-09-25 04:27:20,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:27:20,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:27:20,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:20,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:27:20,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:27:20,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:20" (1/1) ... [2020-09-25 04:27:20,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:20, skipping insertion in model container [2020-09-25 04:27:20,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:27:20" (1/1) ... [2020-09-25 04:27:20,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:27:20,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:27:21,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:21,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:27:21,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:27:21,529 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:27:21,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21 WrapperNode [2020-09-25 04:27:21,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:27:21,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:27:21,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:27:21,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:27:21,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... [2020-09-25 04:27:21,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:27:21,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:27:21,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:27:21,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:27:21,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:27:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:27:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:27:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:27:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:27:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:27:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:27:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:27:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:27:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:27:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:27:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:27:23,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:27:23,108 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:27:23,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:23 BoogieIcfgContainer [2020-09-25 04:27:23,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:27:23,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:27:23,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:27:23,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:27:23,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:27:20" (1/3) ... [2020-09-25 04:27:23,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:23, skipping insertion in model container [2020-09-25 04:27:23,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:27:21" (2/3) ... [2020-09-25 04:27:23,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:27:23, skipping insertion in model container [2020-09-25 04:27:23,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:27:23" (3/3) ... [2020-09-25 04:27:23,129 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label19.c [2020-09-25 04:27:23,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:27:23,153 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:27:23,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:27:23,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:27:23,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:27:23,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:27:23,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:27:23,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:27:23,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:27:23,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:27:23,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:27:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:27:23,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-25 04:27:23,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:23,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:23,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:23,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash 405983745, now seen corresponding path program 1 times [2020-09-25 04:27:23,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:23,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413272231] [2020-09-25 04:27:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 04:27:28,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:27:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 04:27:28,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:27:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:27:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 04:27:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:27:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:28,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:28,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 04:27:28,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:28,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:27:28,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:28,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413272231] [2020-09-25 04:27:28,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:27:28,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:27:28,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71595712] [2020-09-25 04:27:28,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:27:28,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:29,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:27:29,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:27:29,029 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:27:31,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:31,657 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 04:27:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:27:31,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-09-25 04:27:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:31,692 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 04:27:31,693 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 04:27:31,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 04:27:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 04:27:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 04:27:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 04:27:31,817 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 118 [2020-09-25 04:27:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:31,819 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 04:27:31,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:27:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 04:27:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 04:27:31,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:31,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:31,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:27:31,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:31,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:31,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1821694635, now seen corresponding path program 1 times [2020-09-25 04:27:31,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:31,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188527823] [2020-09-25 04:27:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:35,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:36,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:36,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 04:27:36,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:27:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:27:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:36,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:27:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 04:27:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:37,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:37,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:37,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:37,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:37,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:37,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:37,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:37,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:37,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:27:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:27:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:37,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188527823] [2020-09-25 04:27:37,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:37,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:37,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872420361] [2020-09-25 04:27:37,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:37,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:37,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:37,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:37,140 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 04:27:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:39,092 INFO L93 Difference]: Finished difference Result 1609 states and 2066 transitions. [2020-09-25 04:27:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:39,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-09-25 04:27:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:39,107 INFO L225 Difference]: With dead ends: 1609 [2020-09-25 04:27:39,107 INFO L226 Difference]: Without dead ends: 972 [2020-09-25 04:27:39,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-09-25 04:27:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 962. [2020-09-25 04:27:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-09-25 04:27:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1226 transitions. [2020-09-25 04:27:39,157 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1226 transitions. Word has length 136 [2020-09-25 04:27:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:39,158 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1226 transitions. [2020-09-25 04:27:39,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1226 transitions. [2020-09-25 04:27:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 04:27:39,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:39,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:39,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:27:39,166 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:39,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:39,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1653572791, now seen corresponding path program 1 times [2020-09-25 04:27:39,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:39,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606436634] [2020-09-25 04:27:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:39,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 04:27:43,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3924 [2020-09-25 04:27:43,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 04:27:43,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:27:43,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:43,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:43,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:43,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:27:43,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:43,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:43,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:27:43,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:43,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606436634] [2020-09-25 04:27:43,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:43,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:43,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212987596] [2020-09-25 04:27:43,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:43,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:43,531 INFO L87 Difference]: Start difference. First operand 962 states and 1226 transitions. Second operand 5 states. [2020-09-25 04:27:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:45,898 INFO L93 Difference]: Finished difference Result 2516 states and 3337 transitions. [2020-09-25 04:27:45,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:45,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 04:27:45,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:45,907 INFO L225 Difference]: With dead ends: 2516 [2020-09-25 04:27:45,907 INFO L226 Difference]: Without dead ends: 1199 [2020-09-25 04:27:45,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-09-25 04:27:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1188. [2020-09-25 04:27:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2020-09-25 04:27:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1440 transitions. [2020-09-25 04:27:45,954 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1440 transitions. Word has length 156 [2020-09-25 04:27:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:45,955 INFO L479 AbstractCegarLoop]: Abstraction has 1188 states and 1440 transitions. [2020-09-25 04:27:45,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1440 transitions. [2020-09-25 04:27:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 04:27:45,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:45,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:45,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:45,962 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1367701794, now seen corresponding path program 1 times [2020-09-25 04:27:45,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:45,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318725056] [2020-09-25 04:27:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:46,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 04:27:51,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:27:51,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:27:51,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 04:27:51,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 04:27:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:51,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:51,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:27:51,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:27:51,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:27:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 04:27:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:51,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:27:51,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 04:27:51,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318725056] [2020-09-25 04:27:51,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:51,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:51,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101013782] [2020-09-25 04:27:51,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:51,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:51,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:51,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:51,326 INFO L87 Difference]: Start difference. First operand 1188 states and 1440 transitions. Second operand 5 states. [2020-09-25 04:27:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:53,208 INFO L93 Difference]: Finished difference Result 3146 states and 3896 transitions. [2020-09-25 04:27:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:53,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 04:27:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:53,222 INFO L225 Difference]: With dead ends: 3146 [2020-09-25 04:27:53,222 INFO L226 Difference]: Without dead ends: 1669 [2020-09-25 04:27:53,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:27:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2020-09-25 04:27:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1637. [2020-09-25 04:27:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-09-25 04:27:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 1947 transitions. [2020-09-25 04:27:53,286 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 1947 transitions. Word has length 182 [2020-09-25 04:27:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:53,287 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 1947 transitions. [2020-09-25 04:27:53,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 1947 transitions. [2020-09-25 04:27:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-09-25 04:27:53,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:53,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:27:53,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:53,297 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:53,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:53,298 INFO L82 PathProgramCache]: Analyzing trace with hash 709745354, now seen corresponding path program 1 times [2020-09-25 04:27:53,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:53,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418770538] [2020-09-25 04:27:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:53,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:55,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 04:27:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:27:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:27:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-25 04:27:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 04:27:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:58,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:58,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:58,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:58,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:27:58,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:58,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:58,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:27:58,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 04:27:58,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:58,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:27:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:27:58,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418770538] [2020-09-25 04:27:58,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:58,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:58,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11964099] [2020-09-25 04:27:58,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:58,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:58,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:58,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:58,656 INFO L87 Difference]: Start difference. First operand 1637 states and 1947 transitions. Second operand 5 states. [2020-09-25 04:28:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:00,577 INFO L93 Difference]: Finished difference Result 4566 states and 5553 transitions. [2020-09-25 04:28:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:00,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-09-25 04:28:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:00,605 INFO L225 Difference]: With dead ends: 4566 [2020-09-25 04:28:00,605 INFO L226 Difference]: Without dead ends: 2951 [2020-09-25 04:28:00,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2020-09-25 04:28:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2248. [2020-09-25 04:28:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2248 states. [2020-09-25 04:28:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2712 transitions. [2020-09-25 04:28:00,712 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2712 transitions. Word has length 207 [2020-09-25 04:28:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:00,713 INFO L479 AbstractCegarLoop]: Abstraction has 2248 states and 2712 transitions. [2020-09-25 04:28:00,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2712 transitions. [2020-09-25 04:28:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 04:28:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:00,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:00,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:00,726 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1650988844, now seen corresponding path program 1 times [2020-09-25 04:28:00,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:00,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065245999] [2020-09-25 04:28:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-09-25 04:28:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:05,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:05,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:05,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:28:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:05,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:28:05,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:05,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 04:28:05,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 04:28:06,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065245999] [2020-09-25 04:28:06,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:06,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:28:06,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604883053] [2020-09-25 04:28:06,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:06,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:06,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:06,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:06,016 INFO L87 Difference]: Start difference. First operand 2248 states and 2712 transitions. Second operand 5 states. [2020-09-25 04:28:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:07,615 INFO L93 Difference]: Finished difference Result 5245 states and 6443 transitions. [2020-09-25 04:28:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:07,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-09-25 04:28:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:07,619 INFO L225 Difference]: With dead ends: 5245 [2020-09-25 04:28:07,619 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:28:07,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:28:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:28:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:28:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:28:07,635 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 225 [2020-09-25 04:28:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:07,635 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:28:07,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:28:07,635 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:28:07,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:28:07,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:28:08,658 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 21